IMRT

Reasons for a potentially increased incidence of secondary tumors by IMRT 1. Increased biological effectiveness of an elevated total body neutron dose

2. When compared to 3D-Conformal RT, IMRT irradiates a more tissue at lower doses

3. Increased scatter dose when dose-escalation is performed

4. Increased leakage radiation because of low MU-efficiency of IMRT

ESTRO IMRT Course, May 2013